"Over the past three days the Russian Defense Ministry has redeployed to Hmeimim three advanced complexes equipped with drones and two radars capable of identifying small targets and of exposing the use of artillery systems by terrorists," says a news release obtained by TASS.

In order to spot the positions of multiple rocket launchers, artillery pieces and mortars being used by truce abusers "two sets of artillery instrumental reconnaissance have been delivered to Syria and deployed there."

According to the ministry, Russia has created a system for full monitoring of the conflict zone situation.

"In order to strengthen control over the regime of the cessation of hostilities in Syrian territory the Armed Forces of the Russian Federation have created a system for the full monitoring of the situation in the conflict zone. Drones, a grouping of satellites and other technical reconnaissance equipment are used in the control," the ministry said.

"The airspace control is exercised by radio-technical facilities of the air defense systems, including Syrian systems and aviation of the Russian Aerospace Forces," the press service said.

The ceasefire regime between the Syrian government forces and armed opposition groups came into force from 00:00 (01:00, Moscow time) on February 27. Ceasefire is not applicable to terrorist groups Islamic State and Jabhat al-Nusra.

An hour before the ceasefire came into force, the United Nations Security Council adopted a resolution in support of cessation of hostilities in Syria. The document was initiated by Russia and the United States and won support from all the 15 members of the United Nations Security Council. United Nations Envoy for Syria Staffan de Mistura, told a briefing after the United Nations Security Council meeting that 97 armed groups in Syria had accepted the ceasefire terms.

According to the Russian military, the ceasefire regime in generally observed, but 15 violations of the regime have been recorded over the past 24 hours alone.